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This
C-Scan package is designed to interface to a new or existing ultrasonic
scanning system. It can be supplied to work with the existing
ultrasonic flaw detector system. Alternatively a new PC based
system can be supplied, as required.
Resolution
0.25mm in both X and Y directions
Can
be fitted to new or used scanning tanks
Cost
effective, since system can be fitted to existing tank and ultrasonic
system
New
High Resolution ultrasonic system can be included if required
The
system has a nominal resolution of 0.25mm in both the X and Y
directions. Scans can be made by scanning in the X direction and
index in the Y direction or vice versa. C-Scan data can be collected
on the left to right scan, right to left scan or in both directions.
Positional
and flaw size measurements at each grid position are stored in
memory. These stored scans can then be recalled and re-displayed
using variable threshold levels and colours.
Facilities
are provided to pan across the image of the tested area; the panned
being displayed at a higher zoom level.
Selected
areas may also be displayed at a higher zoom level with a mouse
by simply dragging a box around the required area on the image
of the tested area.
Defect
size measurements can be taken at any zoom level. The effective
diameter measured is displayed on the main screen.
Main
C-Scan Screen
The
maximum displayed area is pre-set for each system, and is determined
by the area of the scanning tank to which the system is fitted.
The
displayed area for a particular scan can be manually entered or
automatically captured during the initial set-up. In all cases
the C-Scan data is stored with a resolution of 0.25mm in the X
direction and a maximum resolution in the Y direction. The Y direction
resolution is dependant on the selected index.
Information
relating to the test can be entered and saved together with the
C-Scan image it’s self. This information is also printed
when required.
Up
to 10 threshold levels and colours associated with these levels
are provided. Both the threshold level and the associated colour
may be selected and changed as required.
The
system also calculates the percentage area of each threshold in
the scan, which is then displayed. These percentage figures are
updated if the zoom level is changed, since the calculation for
this is based on the displayed image.
Pan
of C-Scan Image
Selecting
PAN mode displays a magnifying glass mouse cursor. Positioning
this cursor over the required flaw will result in a zoomed image
displayed to the right of the main image.
Zoom
of C-Scan image
Select
the ZOOM feature and dragging a box around the required area to
zoom. The C-Scan display will then be updated to this level of
ZOOM.
Defect
Sizing
The
area of a flaw can be measured using the inbuilt measuring facility.
Simply select the required threshold level to which you require
the defect to be measured, and then drag a box around the required
defect. The resultant measurement is displayed as shown;
Mechanical
Requirements
For
scanning tanks that do not have encoders fitted or signal to indicate
direction of movement, the following may be required.
-
Remove existing platen type recording facilities.
-
Fit
multi-turn precision potentiometers to the X and Y axis
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Fit
a direction signal to the main scanning axis, to indicate left
or right scan.
- Supply screened
interconnections between the PC, scanning tank and existing ultrasonic
flaw detector.
To obtain this
information as an Adobe Acrobat document Click
Here.
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